Trygve Helgaker (born August 11, 1953, in Porsgrunn, Norway) is professor of chemistry, Department of Chemistry, University of Oslo, Norway. He is a member of the International Academy of Quantum Molecular Science, 2005. He has written more than 200 scientific papers, and the book, ''Molecular Electronic-Structure Theory'' (Trygve Helgaker, Poul Jørgensen, and Jeppe Olsen, Wiley, Chichester, 2000). He is one of the main authors of the DALTON program.

References

His International Academy of Quantum Molecular Science page
Living people 1953 births Norwegian chemists Theoretical chemists Members of the International Academy of Quantum Molecular Science People from Porsgrunn Royal Norwegian Society of Sciences and Letters {{chemist-stub